Module: Composable::Core::InheritableAttributes::ClassMethods

Defined in:
lib/composable/core/inheritable_attributes.rb

Instance Method Summary collapse

Instance Method Details

#inheritable_attributes(*attributes) ⇒ Object 



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# File 'lib/composable/core/inheritable_attributes.rb', line 9

def inheritable_attributes(*attributes)
  options = attributes.extract_options!

  @inheritable_attributes ||= [{attribute: :inheritable_attributes}]
  attributes.each do |attribute|
    @inheritable_attributes << {attribute: attribute, default: options[:default]}

    class_eval <<-RUBY, __FILE__, __LINE__ + 1
      class << self; attr_accessor :#{attribute} end
    RUBY
    send("#{attribute}=", options[:default]) unless options[:default].nil?
  end
  @inheritable_attributes
end

#inherited(subclass) ⇒ Object 



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# File 'lib/composable/core/inheritable_attributes.rb', line 41

def inherited(subclass)
  super

  Array(@inheritable_attributes).each do |hash|
    inheritable_attribute = hash[:attribute]
    instance_name = "@#{inheritable_attribute}"
    instance_value = instance_variable_get(instance_name).deep_dup
    subclass.instance_variable_set(instance_name, instance_value || hash[:default].deep_dup)
  end

  Array(@uninheritable_attributes).each do |hash|
    uninheritable_attribute = hash[:attribute]
    instance_name = "@#{uninheritable_attribute}"

    if instance_name == "@uninheritable_attributes"
      instance_value = instance_variable_get(instance_name).deep_dup
      subclass.instance_variable_set(instance_name, instance_value)
    else
      subclass.instance_variable_set(instance_name, hash[:default].deep_dup)
    end
  end
end

#uninheritable_attributes(*attributes) ⇒ Object 



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# File 'lib/composable/core/inheritable_attributes.rb', line 24

def uninheritable_attributes(*attributes)
  options = attributes.extract_options!

  @uninheritable_attributes ||= [{attribute: :uninheritable_attributes}]

  attributes.each do |attribute|
    @uninheritable_attributes << {attribute: attribute, default: options[:default]}

    class_eval <<-RUBY, __FILE__, __LINE__ + 1
      class << self; attr_accessor :#{attribute} end
    RUBY
    send("#{attribute}=", options[:default]) unless options[:default].nil?
  end

  @uninheritable_attributes
end